Siemens SINAMICS S150 - SMC30 Sensor Module for Detecting the Actual Motor Speed (Option K50); Description

Electrical installation
4.9 Other connections
Drive converter cabinet units
100 Operating Instructions, 07/07, A5E00288214A
4.9.18 SMC30 Sensor Module for detecting the actual motor speed (option K50)
4.9.18.1 Description
The SMC30 Sensor Module is used for determining the actual motor speed. The signals
emitted by the rotary pulse encoder are converted here and made available closed-loop
controller via the DRIVE-CLiQ interface for evaluation purposes.
The following encoders can be connected to the SMC30 Sensor Module:
● TTL encoder
● HTL encoder
● SSI encoder
● KTY or PTC temperature sensor
Table 4-43 Connectable encoders with supply voltage
Encoder type Remote sense X520 (D-Sub) X521 (terminal) X531 (terminal) Open-circuit
monitoring
HTL bipolar 24 V No No Yes Yes No
HTL unipolar 24 V No No Yes Yes No
TTL bipolar 24 V No Yes Yes Yes Yes
TTL bipolar 5 V To X520 Yes Yes Yes Yes
TTL unipolar No No No No No
SSI 24 V No Yes Yes Yes Yes
Table 4-44 Maximum signal cable lengths
Encoder type Maximum signal cable length in m
TTL 100
HTL unipolar 100
HTL bipolar 300
SSI 100
Note
For HTL encoders, in order to reduce the effect of interference, a bipolar connection is
recommended.